Comma separated list with “and” in place of the last comma

Question

I want to create a comma separated list in C# with the word \"and\" as last delimiter.

string.Join(\", \", someStringArray)

will result in

Answer 1

Is there a simple way to achieve it with Linq and without using loops?

Not possible without loop. For loop will work best. LINQ queries will use multiple loops.

    string Combine (IEnumerable list)
    {
        bool start = true;
        var last = string.Empty;
        String str = string.Empty;

        foreach(var item in list)
        {
            if ( !start)
            {
                str = str + " , " + item; 
                last = item;

            }
            else
            {
                str = item;
                start = false;
            } 

        }

        if (!string.IsNullOrWhiteSpace(last))
        {
            str = str.Replace( " , " + last, " and " + last);
        }

        return str;
    }